CN106160342A - A kind of heat resisting motor being applicable to high-temperature submersible electric pump - Google Patents
A kind of heat resisting motor being applicable to high-temperature submersible electric pump Download PDFInfo
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- CN106160342A CN106160342A CN201610707507.XA CN201610707507A CN106160342A CN 106160342 A CN106160342 A CN 106160342A CN 201610707507 A CN201610707507 A CN 201610707507A CN 106160342 A CN106160342 A CN 106160342A
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- motor shaft
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- motor
- thrust bearing
- ring plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A kind of heat resisting motor being applicable to high-temperature submersible electric pump, motor shaft is hollow-core construction, and its one end extends to top enclosure and plug at end part, and the other end extends to afterbody casing and end is oil-in, is sequentially provided with supercharging helical blade and filter at oil-in；Being equipped with alignment bearing between each adjacent cells rotor, righting lining forms friction pair with alignment bearing；Equipped with thrust bearing between top enclosure and motor shaft, the stationary ring plate of thrust bearing forms friction pair with rotating ring plate, and rotating ring plate and motor shaft are fixedly connected with by flat key；By getting rid of oilhole on motor shaft, each friction pair is lubricated；Thrust bearing rotating ring plate top is oil storage space, and motor shaft is isolated with lubricating oil in oil storage space by main shaft distance bushing；Equipped with radial direction support bushing between afterbody casing and motor shaft, its upper motor axle is set with main shaft pillar；Drainback passage is offered in afterbody shell body；Drainback passage is arranged over shield, and the afterbody casing outside it is provided with annular stillpot.
Description
Technical field
The invention belongs to high-temperature submersible electric pump technical field, particularly relate to a kind of resistance to height being applicable to high-temperature submersible electric pump
Temperature motor.
Background technology
SAGD (Steam Assisted Gravity Drainage) technology is the heavy crude heat extraction exploitation skill in a forward position
Art, its technological principle is: first passes through the higher gas injection well in position and is continuously injected into steam in oil reservoir, then relies on steam overlap to make
With heating top oil reservoir, and gradually forming vapor chamber, so that the mobility of crude oil strengthens, crude stream is downward under gravity
Portion's horizontal production well, finally by crude oil extraction ground.
The oil well of SAGD technology currently for successful Application, they are most is middle low temperature oil-well, opens at oil well
During adopting, the down-hole ambient temperature that the high-temperature submersible electric pump that used is resistant to is only about 180 DEG C, and minority state external form
Number high-temperature submersible electric pump tolerable temperature can be brought up to about 200 DEG C.But, as the exploitation of centering low temperature oil-well tends to full
With can only turn to and bury the deeper and higher high-temperature oil well of temperature, and the down-hole ambient temperature of high-temperature oil well is up to 220 DEG C of left sides
The right side, current existing high-temperature submersible electric pump has been difficult to meet the exploitation needs of high-temperature oil well.
For high-temperature submersible electric pump, it is divided into aerial part and under ground portion, and aerial part is mainly working power,
It comprises transformer, frequency converter, power distribution cabinet and terminal box etc., and under ground portion comprises motor, protector, gs-oil separator, multistage
Centrifugal pump and cable etc., and the under ground portion of high-temperature submersible electric pump allows for bearing the hot environment of down-hole, particularly motor
Resistance to elevated temperatures can directly influence the functional reliability of high-temperature submersible electric pump, when exploiting in the face of high-temperature oil well, existing height
The motor of temperature submersible electric pump is limited by resistance to elevated temperatures deficiency, has had a strong impact on high-temperature submersible electric pump at high-temperature oil well
Functional reliability in recovery process.
Content of the invention
The problem existing for prior art, the present invention provides a kind of heat resisting motor being applicable to high-temperature submersible electric pump,
It has when hot operation rational electromechanics structure and efficient lubrication and heat dispersion, can effectively improve motor
Down-hole heat resisting temperature, makes high-temperature submersible electric pump meet the exploitation needs of high-temperature oil well, in high-temperature oil well recovery process, makes high temperature
Submersible electric pump has higher functional reliability.
To achieve these goals, the present invention adopts the following technical scheme that a kind of resistance to height being applicable to high-temperature submersible electric pump
Temperature motor, including top enclosure, middle case, afterbody casing, oil storage base, stator core, stator winding, rotor core and electricity
Arbor；Described top enclosure lower end and middle case upper end are tightly connected, and middle case lower end seals even with afterbody casing upper end
Connecing, afterbody casing lower end is tightly connected oil storage base；Described stator core is fixedly mounted on middle case inner surface, described stator
Winding is wrapped in stator core, and stator winding upper end is by the working power phase of cable and high-temperature submersible electric pump aerial part
Even, cable passes through top enclosure, is overlapped by bellows seal and holddown spring carries out encapsulation process between cable and top enclosure；Institute
Stating rotor core and being positioned at middle case center, rotor core is fixedly set on motor shaft, between stator core and rotor core
Leave air gap；Described motor shaft uses hollow-core construction, and motor shaft one end extends to top enclosure, and it is close that its end utilizes plug to carry out
Envelope process；The described motor shaft other end extends to afterbody casing, and its end is oil-in, is provided with supercharging spiral at oil-in
Blade, supercharging helical blade is corresponding with oil storage base；Internal cavities at described top enclosure, middle case and afterbody casing
In, in the inside shoe cream room of oil storage base, be filled with lubricating oil in motor shaft centre bore, rotated by motor shaft and drive profit
Lubricating oil is circulated flowing, is lubricated motor and radiating and cooling by lubrication oil circulation flowing.
Described stator core is composed in series by some unit stators, and described rotor core is by some unit rotor inline groups
Become, between each adjacent cells rotor, be equipped with alignment bearing, carry out radially supporting to rotor core by alignment bearing, holding up
Just being provided with righting lining between bearing and motor shaft, righting lining is fixedly set on motor shaft, righting lining and alignment bearing
Form friction pair；Described alignment bearing just to motor shaft on offer first and get rid of oilhole, righting lining offers Oil Guide
Hole, lubricating oil passes sequentially through first and gets rid of oilhole and oil guiding hole gets rid of to friction pair.
Described alignment bearing is made up of bearing steel, and its hardness is HRC48～54；Described righting lining is by aluminum-bronze material system
Become.
Being provided with thrust bearing between described top enclosure and motor shaft, described thrust bearing includes thrust bearing rotating ring
Plate and thrust bearing stationary ring plate, thrust bearing rotating ring plate is fixedly set on motor shaft, thrust bearing rotating ring plate and motor shaft it
Between be fixedly connected with by flat key；Described thrust bearing stationary ring plate is fixedly mounted in top enclosure, thrust bearing stationary ring plate and thrust
Pairing between bearing rotating ring plate forms friction pair, the corresponding motor shaft of friction pair offers second and gets rid of oilhole, and lubricating oil passes through
Second gets rid of oilhole gets rid of to friction pair.
Described thrust bearing rotating ring plate top is oil storage space, be positioned on the motor shaft of oil storage space be set with main shaft every
Set, motor shaft is isolated with the lubricating oil in oil storage space by main shaft distance bushing.
Radially support bushing is installed between described afterbody casing and motor shaft, at the motor on radial direction support bushing top
Being set with main shaft pillar on axle, main shaft pillar lower end is connected on afterbody casing, offers oil return on the housing of afterbody casing
Passage, drainback passage is paralleled with motor shaft；Pass through drainback passage between the internal chamber of described middle case and oil storage base
It is connected, is provided above shield at drainback passage, the afterbody casing outside drainback passage is provided with annular stillpot, logical
Cross impurity in shield stops oil and enter drainback passage, by impurity in annular stillpot storage oil；Enter in described motor shaft lower end
Oil port is provided with filter.
Beneficial effects of the present invention:
Compared with prior art, it has when hot operation rational electromechanics structure and lubricates efficiently the present invention
And heat dispersion, the down-hole heat resisting temperature of motor can be effectively improved, make high-temperature submersible electric pump meet the exploitation need of high-temperature oil well
Want, in high-temperature oil well recovery process, make high-temperature submersible electric pump have higher functional reliability.
Brief description
Fig. 1 is a kind of heat resisting motor structural representation being applicable to high-temperature submersible electric pump of the present invention；
Fig. 2 is I portion enlarged drawing in Fig. 1；
Fig. 3 is II portion enlarged drawing in Fig. 1；
Fig. 4 is III portion enlarged drawing in Fig. 1；
Fig. 5 is IV portion enlarged drawing in Fig. 1；
In figure, 1 top enclosure, 2 middle cases, 3 afterbody casings, 4 oil storage bases, 5 stator cores, 6
Stator winding, 7 rotor cores, 8 motor shafts, 9 air gaps, 10 plugs, 11 supercharging helical blades, 12 righting axles
Holding, 13 righting linings, 14 first get rid of oilhole, 15 oil guiding holes, 16 thrust bearing rotating ring plates, 17 thrust bearing stationary rings
Plate, 18 flat keys, 19 second get rid of oilhole, 20 oil storage space, 21 main shaft distance bushings, and 22 radial direction support bushings, 23 is main
Axle pillar, 24 drainback passages, 25 shields, 26 annular stillpots, 27 filters, 28 cables, 29 bellows seals
Set, 30 holddown springs.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1～5, a kind of heat resisting motor being applicable to high-temperature submersible electric pump, including top enclosure the 1st, middle part machine
Shell the 2nd, afterbody casing the 3rd, the 6th, the rotor core 7 of oil storage base the 4th, stator core the 5th, stator winding and motor shaft 8；Described top enclosure 1
Lower end is tightly connected with middle case 2 upper end, and middle case 2 lower end is tightly connected with afterbody casing 3 upper end, under afterbody casing 3
End is tightly connected oil storage base 4；Described stator core 5 is fixedly mounted on middle case 2 inner surface, and described stator winding 6 is wound around
In stator core 5, stator winding 6 upper end is connected with the working power of high-temperature submersible electric pump aerial part by cable 28, electricity
Cable 28 passes through top enclosure 1, is carried out at sealing by bellows seal set 29 and holddown spring 30 between cable 28 and top enclosure 1
Reason；Described rotor core 7 is positioned at middle case 2 center, and rotor core 7 is fixedly set on motor shaft 8, stator core 5 with turn
Air gap 9 is left between son unshakable in one's determination 7；Described motor shaft 8 uses hollow-core construction, and motor shaft 8 one end extends to top enclosure 1, its end
Portion utilizes plug 10 to carry out encapsulation process；Described motor shaft 8 other end extends to afterbody casing 3, and its end is oil-in, is entering
Oil port is provided with supercharging helical blade 11, and supercharging helical blade 11 is corresponding with oil storage base 4；Described top enclosure the 1st, in
In the internal cavities of portion's casing 2 and afterbody casing 3, in the inside shoe cream room of oil storage base 4, fill in motor shaft 8 centre bore
Completely there is lubricating oil, rotated by motor shaft 8 and drive lubricating oil to be circulated flowing, by lubrication oil circulation flowing, motor is carried out
Lubrication and radiating and cooling.
Described stator core 5 is composed in series by some unit stators, and described rotor core 7 is by some unit rotor inline groups
Become, between each adjacent cells rotor, be equipped with alignment bearing 12, carry out radially propping up to rotor core 7 by alignment bearing 12
Support, is provided with righting lining 13 between alignment bearing 12 and motor shaft 8, and righting lining 13 is fixedly set on motor shaft 8, righting
Lining 13 and alignment bearing 12 form friction pair；Described alignment bearing 12 just to motor shaft 8 on offer first and get rid of oilhole 14,
Offering oil guiding hole 15 on righting lining 13, lubricating oil passes sequentially through first and gets rid of oilhole 14 and oil guiding hole 15 gets rid of to friction pair.
Described alignment bearing 12 is made up of bearing steel, and its hardness is HRC48～54；Described righting lining 13 is by aluminium bronze material
Material is made, and specifically can use ZQAL9-4-4-2 or ZQAL10-4-4.The alignment bearing 12 made by above-mentioned material and righting lining
Set 13, it can be avoided that increase owing to wearability declines the friction pair gap causing under hot environment, thus avoids radially magnetic pull
The asymmetric electromagnetic viscosimeter problem causing.
Being provided with thrust bearing between described top enclosure 1 and motor shaft 8, described thrust bearing includes that thrust bearing moves
Ring flat-plate 16 and thrust bearing stationary ring plate 17, thrust bearing rotating ring plate 16 is fixedly set on motor shaft 8, thrust bearing rotating ring plate 16
And it is fixedly connected with by flat key 18 between motor shaft 8；Described thrust bearing stationary ring plate 17 is fixedly mounted in top enclosure 1, thrust
Pairing between bearing stationary ring plate 17 and thrust bearing rotating ring plate 16 forms friction pair, and the corresponding motor shaft of friction pair 8 offers
Second gets rid of oilhole 19, and lubricating oil gets rid of oilhole 19 by second and gets rid of to friction pair.Due to thrust bearing rotating ring plate 16 and motor shaft 8 it
Between be fixedly connected with by flat key 18, therefore the moment of torsion of motor shaft 8 is transmitted by flat key 18 completely, is prevented effectively from the motor of rotation
Thrust bearing rotating ring plate 16 is caused stress to concentrate by axle 8, and then improves the toughness of thrust bearing.
Described thrust bearing rotating ring plate 16 top is oil storage space 20, is positioned on the motor shaft 8 of oil storage space 20 suit
Having main shaft distance bushing 21, motor shaft 8 is isolated with the lubricating oil in oil storage space 20 by main shaft distance bushing 21.In oil storage space 20
By the lubricating oil of convection circulation, radiating effect can be made more preferable, simultaneously by main shaft distance bushing 21 by motor shaft 8 and oil storage space 20
Interior lubricating oil is kept apart, it is to avoid most lubricating oil is rotated by motor shaft 8, effectively eliminates agitation frictional heat.
Radially support bushing 22 is installed between described afterbody casing 3 and motor shaft 8, on radial direction support bushing 22 top
Motor shaft 8 on be set with main shaft pillar 23, main shaft pillar 23 lower end is connected on afterbody casing 3, at the housing of afterbody casing 3
On offer drainback passage 24, drainback passage 24 is paralleled with motor shaft 8；At the bottom of the internal chamber of described middle case 2 and oil storage
It is connected by drainback passage 24 between seat 4, be provided above shield 25 at drainback passage 24, the tail outside drainback passage 24
Being provided with annular stillpot 26 on portion's casing 3, in stopping oil by shield 25, impurity enters drainback passage 24, is precipitated by annular
Groove 26 stores impurity in oil；At the oil-in of described motor shaft 8 lower end, filter 27 is installed.By main shaft pillar 23 by motor
Axle 8 is kept apart with external lubrication oil, it is to avoid lubricating oil is rotated by motor shaft 8, effectively eliminates agitation frictional heat.
The first use process of the explanation present invention below in conjunction with the accompanying drawings:
First, stator winding 6 is induced current into by cable 28, after stator winding 6 energising, rotor core 7 and motor shaft 8
Start to rotate, and be positioned at the lubricating oil of motor shaft 8 centre bore, get rid of oilhole 14 by first and get rid of to alignment bearing 12 and righting lining
Friction pair between set 13, gets rid of oilhole 19 by second and gets rid of friction between axial thrust bearing rotating ring plate 16 and thrust bearing stationary ring plate 17
Pair, is lubricated by lubricating oil to each friction pair and cools down.
When lubricating oil by friction pair between alignment bearing 12 and righting lining 13 after, can flow directly into stator core 5 with
In air gap 9 between rotor core 7, then line mode refluxes towards oil storage base 4 under the rotation of motor shaft 8 is with spiral.When
First lubricating oil, by between thrust bearing rotating ring plate 16 and thrust bearing stationary ring plate 17 after friction pair, can flow downwardly into stator iron
In air gap 9 between the heart 5 and rotor core 7, and get rid of, with first, the lubricating oil that oilhole 14 throws away and converge, and together reflux downwards.
When above lubricating oil flows through drainback passage 24, by the stop of shield 25, lubricating oil can be walked around after shield 25 again
Flowing in drainback passage 24, during lubricating oil detours, lubricating oil has to pass through above annular stillpot 26, due to miscellaneous in oil
The density of matter (particulate matter coming off because of abrasion at each bearing) is bigger than lubricating oil, then in oil, impurity can gradually sink and fall
Enter in annular stillpot 26, to realize that the preliminary of impurity is removed and isolation in oil.
After outflow of lubrication oil drainback passage 24, can first flow in oil storage base 4, due to motor shaft 8 High Rotation Speed and
That gets rid of oilhole gets rid of oil action, the oil-in of motor shaft 8 lower end can be made to produce suction, and the lubricating oil in oil storage base 4 can inhaled
Again sucked in the centre bore of motor shaft 8 under power, it is achieved that circulating of lubricating oil.
Further, owing to being mounted with filter 27 at the oil-in of motor shaft 8 lower end, will be from drainback passage by filter 27
24 lubricating oil flowing out carry out removal of impurities, it is ensured that the lubricating oil entering in motor shaft 8 centre bore has higher cleannes.
Owing to being also provided with supercharging helical blade 11 at the oil-in of motor shaft 8 lower end, act at supercharging helical blade 11
Under, the pressure at the oil-in of motor shaft 8 lower end can be improved further, so that the circular flow of lubricating oil is increased.
Circulating by lubricating oil, the heat that motor produces in running can constantly be taken away by lubricating oil, and
The heat that lubricating oil carries can realize transmission by motor case again, is finally taken away smoothly by produced liquid in oil well.
Scheme in embodiment is simultaneously not used to limit the scope of patent protection of the present invention, all without departing from the present invention do etc.
Effect is implemented or change, is both contained in the scope of the claims of this case.
Claims (6)
1. the heat resisting motor being applicable to high-temperature submersible electric pump, it is characterised in that: include top enclosure, middle case, tail
Portion's casing, oil storage base, stator core, stator winding, rotor core and motor shaft；Described top enclosure lower end and middle case
Upper end is tightly connected, and middle case lower end is tightly connected with afterbody casing upper end, and afterbody casing lower end is tightly connected oil storage base；
Described stator core is fixedly mounted on middle case inner surface, and described stator winding is wrapped in stator core, on stator winding
End is connected by the working power of cable and high-temperature submersible electric pump aerial part, and cable passes through top enclosure, cable and top machine
Overlapped by bellows seal between shell and holddown spring carries out encapsulation process；Described rotor core is positioned at middle case center, rotor
Iron core is fixedly set on motor shaft, leaves air gap between stator core and rotor core；Described motor shaft uses hollow-core construction,
Motor shaft one end extends to top enclosure, and its end utilizes plug to carry out encapsulation process；The described motor shaft other end extends to tail
Portion's casing, its end is oil-in, is provided with supercharging helical blade at oil-in, and supercharging helical blade is relative with oil storage base
Should；In the internal cavities of described top enclosure, middle case and afterbody casing, in the inside shoe cream room of oil storage base,
It is filled with lubricating oil in motor shaft centre bore, rotated by motor shaft and drive lubricating oil to be circulated flowing, followed by lubricating oil
Circulation is dynamic to be lubricated and radiating and cooling to motor.
2. a kind of heat resisting motor being applicable to high-temperature submersible electric pump according to claim 1, it is characterised in that: described fixed
Son is unshakable in one's determination to be composed in series by some unit stators, and described rotor core is made up of some unit rotor inlines, each adjacent cells
It is equipped with alignment bearing between rotor, carry out radially supporting to rotor core by alignment bearing, at alignment bearing and motor shaft
Between be provided with righting lining, righting lining is fixedly set on motor shaft, and righting lining and alignment bearing form friction pair；Described
Alignment bearing just to motor shaft on offer first and get rid of oilhole, righting lining offers oil guiding hole, lubricating oil leads to successively
Cross first and get rid of oilhole and oil guiding hole gets rid of to friction pair.
3. a kind of heat resisting motor being applicable to high-temperature submersible electric pump according to claim 2, it is characterised in that: described hold up
Positive bearing is made up of bearing steel, and its hardness is HRC48～54；Described righting lining is made up of aluminum-bronze material.
4. a kind of heat resisting motor being applicable to high-temperature submersible electric pump according to claim 1, it is characterised in that: described
Being provided with thrust bearing between top enclosure and motor shaft, described thrust bearing includes that thrust bearing rotating ring plate and thrust bearing are quiet
Ring flat-plate, thrust bearing rotating ring plate is fixedly set on motor shaft, solid by flat key phase between thrust bearing rotating ring plate and motor shaft
Even；Described thrust bearing stationary ring plate is fixedly mounted in top enclosure, between thrust bearing stationary ring plate and thrust bearing rotating ring plate
Pairing formed friction pair, the corresponding motor shaft of friction pair offers second and gets rid of oilhole, lubricating oil by second get rid of oilhole get rid of to
Friction pair.
5. a kind of heat resisting motor being applicable to high-temperature submersible electric pump according to claim 4, it is characterised in that: described only
Thrust bearing rotating ring plate top is oil storage space, is positioned on the motor shaft of oil storage space and is set with main shaft distance bushing, and motor shaft passes through
Main shaft distance bushing is isolated with the lubricating oil in oil storage space.
6. a kind of heat resisting motor being applicable to high-temperature submersible electric pump according to claim 1, it is characterised in that: described
Radially support bushing is installed between afterbody casing and motor shaft, the motor shaft on radial direction support bushing top is set with main shaft
Pillar, main shaft pillar lower end is connected on afterbody casing, offers drainback passage on the housing of afterbody casing, drainback passage with
Motor shaft is parallel；It is connected by drainback passage between the internal chamber of described middle case with oil storage base, lead in oil return
Road is provided above shield, the afterbody casing outside drainback passage is provided with annular stillpot, in stopping oil by shield
Impurity enters drainback passage, by impurity in annular stillpot storage oil；It was provided with at the oil-in of described motor shaft lower end
Filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707507.XA CN106160342A (en) | 2016-08-23 | 2016-08-23 | A kind of heat resisting motor being applicable to high-temperature submersible electric pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707507.XA CN106160342A (en) | 2016-08-23 | 2016-08-23 | A kind of heat resisting motor being applicable to high-temperature submersible electric pump |
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| CN106160342A true CN106160342A (en) | 2016-11-23 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593380A (en) * | 2016-12-29 | 2017-04-26 | 天津市百成油田采油设备制造有限公司 | Heavy oil well production method |
| CN110571968A (en) * | 2019-10-24 | 2019-12-13 | 天津市地源泵业有限公司 | High-temperature-resistant motor |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN112039255A (en) * | 2020-09-11 | 2020-12-04 | 沈阳工业大学通益科技有限公司 | High-temperature submersible motor centering bearing and centering shaft sleeve assembly structure and application thereof |
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| CN113937954A (en) * | 2021-10-20 | 2022-01-14 | 深圳市德创水下智能装备有限公司 | Novel underwater propeller |
| CN114421671A (en) * | 2022-03-28 | 2022-04-29 | 胜利油田胜利泵业有限责任公司 | Submersible permanent magnet motor |
| CN116885876A (en) * | 2023-06-29 | 2023-10-13 | 山东威马泵业股份有限公司 | Axial magnetic flux multi-disc type submersible permanent magnet synchronous motor |
| CN117411244A (en) * | 2023-12-14 | 2024-01-16 | 沈阳众创高科节能电机技术有限公司 | Sectional multi-stage cooling water-filled permanent magnet submersible motor |
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| CN205945411U (en) * | 2016-08-23 | 2017-02-08 | 沈阳工业大学通益科技有限公司 | High temperature resistant motor suitable for latent oily charge pump of high temperature |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106593380B (en) * | 2016-12-29 | 2019-04-19 | 天津市百成油田采油设备制造有限公司 | A kind of heavy oil wells recovery method |
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| CN110571968A (en) * | 2019-10-24 | 2019-12-13 | 天津市地源泵业有限公司 | High-temperature-resistant motor |
| CN111997577B (en) * | 2020-03-25 | 2022-05-20 | 中国海洋石油集团有限公司 | Injection-production integrated tubular column structure of heat-insulation canned electric submersible pump and technological method |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
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Application publication date: 20161123 |